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Перевод: sedimentary
[прилагательное] осадочный
Тезаурус:
- The arcuate island chain of the Outer Hebrides is underlain by rocks which are amongst the oldest in Britain, principally comprising Lewisian gneisses with some granites and younger sedimentary rocks.
- The Permo-Triassic sedimentary rocks of the Solway Basin conceal a major NNE-trending syncline containing a thick succession of Upper Palaeozoic (? late Devonian to late Carboniferous) sedimentary rocks; it is likely that the Coal Measures strata of this syncline are contiguous (beneath younger cover rocks) with those of the Canonbie and West Cumberland coalfields.
- During the Carboniferous, nonmarine sedimentary basins formed adjacent to dextral strike-slip faults trending NE-;SW in both late Visan and Westphalian B times.
- This is largely because of its enormous potential for dating geological processes and sedimentary sequences.
- As well as the Lewisian orthogneisses described above, several outcrops of metamorphic rocks occur which were undoubtedly derived from sedimentary rocks, and the old term paragneiss has been used to describe these, although this has now been superseded by the simpler term metasediments.
- It was formed by the heating and crushing of shale, a sedimentary rock which has hardened from mud.
- The cyclic siliciclastic sedimentary sequence between the Top Hosie Limestone and the Johnstone Shell Bed continues to be studied in order to classify the palaeoenvironment of the Central Coalfield.
- The uplift of a sedimentary pile undergoing maturation is likely to have the effect of leading to a cessation of hydrocarbon generation.
- Microstratigraphy is the study of the sediments in which the bones occur; to the extent that the bones are themselves modified by sedimentary processes, it is an integral part of the taphonomic process, but when the bones come from a completely separate source from the sediments there may be little interaction.
- Pilbeam, in a continuing series of investigations in the sedimentary beds formed by rivers flowing from the Himalayas, themselves dating back only to about 20 million years ago, considers that of these forms Ramapithecus , because of its dental structure with large molars and smaller incisors and canines, is the most plausible ancestral form of the late Pliocene.
- They did not find oil and gas, merely thick sedimentary areas that could indicate their presence.
- In some sedimentary uranium ores, such as those in the southwestern US, oxidising solutions percolating through U-rich rocks dissolved U(VI) and transported it until the redox conditions changed and uranium precipitated as the U(IV) mineral uraninite.
- Completion of the mapping on the Trevose Head (335) sheet in Cornwall permitted an appreciation of the sedimentary features of the predominant Trevose Slate Formation (Eifelian-Frasnian) and its significance in the evolution of the Trevone Basin.
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